Vertical friction-saw.



E. A. FERGUSSON, DECD.'

E. M. FERGUSSON, EXEGUTRIX.

V VERTICAL PRICTION SAW. APLIUATIGN FILED AUG. 20, 1910.

Patented June 4, 1912.

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n 'rit u W HENRY A. FERGUSSON, OF ST. LOUIS, MISSOURI; ELLA IVI. FERGUSSON, OF WEBSTER GROVES, MISSOURI, EXECUTRIX OF SAID HENRY A. FERGUSEION, DECEASED.

VERTICAL FRICTION-SAW.

1 ,028,103. Srecifiation 0f Letters Patent Patented J une et, MM2. Application filed August 20, 1910. Serial No. 578,186.

To all 'zn/1.0m it may concern: upon, the Huid being` controlled bv a twee Be it known that I, HENRY A. FERGUSSON, .f way valve whereby, kas the sustaining presa citizen of the United States, residing atv sure is gradually released, the saw is ncr- St. Louis, Missouri, have invented a'certain mitted to drop by gravitv and effect its xcut.

5 new and useful Imprcvement in Vertical i In heavy Work, a three-iway valve may be '3U Friction- Saws, of which the following is a employed whereby pressure may be admitted full, clear, and exact description, such as g above the piston `if desired. I prefer. how will enable others skilled in the art to which ever that the saw disk be vieldingly suspendit appertains to make and use the same, refed and dropped by gravity,.as in this way erence being had to the accompanying drawit is practically self-controlled by cutting its 653 ings, forming part of this specification, in V own way through the material. The verwhichl tical face of the work-holder isV adjustable l Figure l is a side elevational View of my on its supporting bed, so that the beam or improved vertical friction saw; Fig. 2 is a x angle can be arranged at an angle to cut the rear elevation of the same, and Fig. 3` is a g same on an incline. l fil top, plan view. In the drawings.` l indicates a base-plate This invention relates to a new and usefrom one end of which rises a housing fulA in'iprovement in friction saws designed The inner edge of this housing constitutes a for cutting commercially rolled structural vertical guideway 3, on whichis arranged a 2o beams and angles, and consists in mounting frame 4. To this frame is connected a yoke 75 the disk directly upon the shaft of a motor 51 which is, in effect, an extension from a arranged to move 'on vertical guideways, piston crossshead G, said cross-head being said motor and saw being controlled by liftsecured to a piston rod 7 whose head 8 opering means whereby they are raised above the ates in a cylinder 9.

work to be operated upon and permitted to 10 is' a pipe leading into the lower end of 80 drop by gravity., The lifting means shown the cylinder, said pipe being` controlled by is a fluid actuated piston, 'though it is oba two-way valve 11 whereby*pressure is advious that other means may be employed to mitted to and exhausted from the under side raise lthe saw to its elevated position. The of the head 8.

work is arranged upon a work-support in On the frame et is arranged a motor 12, on 85 such4 a way that the center of the saw will whose armature shaft 18 secured a friction cause the entering cutting edge to effect a cutting disk 14. This cutting disk is prefshearin'g cut or a cut at an angle to the axis erably arranged to one side of the vertical of the beam or angle arranged in position guideways, as shown in Fig. 2.

whereby the saw not only operates in a diagl5 indicates a pair of pedestals,-or a sin- 90 onal line through the beam and in this way .gle pedestal with a slot for the passage of is able to effect a uniform travel through the cutting disk may be employed,-on the beam because in only part of its travel is which is bolted a knee bracket 1G constitutthere presented more than one thickness of ing the vertical face o'f the work support.

40 web and flange, but, in addition, the cown- This bracket is mounted upon the pedestal S5 ward and outward pressure of the cutting 15 by` means of bolts 17, the mounting being disk forces the 'beam firmly in position f such that 011e of the bolts acts as a pivot, against the work-support so that it is not and the other copcratcs with a curved slot necessary to provide said work-support with l in t-he pedestal 15 (shown in dotted lines in clamping means. Fig. whereby the bracket may be ad` 100 My invention is exceedingly simple and I, justed in angular positions to enable the effective in operation. In practice, the disk disk to cut the beam or `angle on a bevel.

l l l is designed to run at about two thousand In operation, pressure is admitted under (2,000)v revolutions per minute, and operthe piston'headso as to raise the cutting ates upon the well-known principle incident disk and its drivlng motor. The beam or 105 to the use of friction cutting disks. there other article to be out is now placed in posithe Huid actuated piston is used, either hytion, the brackets 1G having been previously draulic or air pressure may be employed to properly adjusted. The. two-way valve is s raise the piston and its connected motorl manipulated to release the pressure from driven disk above the work to be operated l under the cutting disk, andas the cutting 3 1;

disk strikes the beam it will first cut into one of the upper flanges, its continued downward movement cutting the opposite upper flange and the web, this diagonal cut belng the easiest for the cutting disk, and the resultant of the pressures exerted upon the beam being such as to hold the beam firmly in position without requiring the use of clampin ,devices for the work.

The mac ine illustrated in the drawings is designed to cut commercially rolled structures up lto as large as 2li-inch I-beams, Bethlehem sections, and other large and unwieldy shapes. My invention has the advantage, also, of being able to sever, on account of the diagonal cut, built-up structures, such as columns, girders, and the like. If heavy Work is encountered, 'Weights can be added to theframe 4, or, as before inentioned, pressure admitted above the piston head 8 through a pipe 1S leading to a three-Way valve placed inthe position of the two-way valve shown.

In Fig. l, I have shown a bracket 19 secured to the under side of the base-plate on which a railroad rail can be placed, as in dicated by dotted lines. In this manner the device can be used on a truck in railroad construction and the rails severed without requiring them to be'lited above the baseplate.

What I claim is:

A device of the class described comprising a base plate, a pair of vertical guideways disposed adjacently on said base plate, said ,uideways being provided with outwardly isposed fiat bearing faces, a uid motor disposed on said base plate between said guideways, a carriage secured on said vertical guideways for vertical movement on said bearing faces, a yoke operating between said guideways connecting said carriage to an actuated member of said fluid motor a inotorand cutting disk mounted on te carriage, and an adjustable work support mountedon said base plate in such a position as to be intersected by the forward edge of the cutter.

In testimony whereof I hereunto aiiX my sionature in the presence of two witnesses,

- this 11th day of August, 1910.

HENRY A. FERGUSSON.

Witnessem M. P. SMITH,

B. L. CROWLEY. 

